Friday
May 6, 2016

Posts by SARA

Total # Posts: 4,297

Chemistry
Which of the following is a bond in which a metal transfers one or more electrons to a nonmetal? ionic bond hydrogen bond metallic bond covalent bond
December 1, 2015

Chemistry
The ionization energies (kJ/mol) of hydrogen (H), nitrogen (N), sodium (Na), and oxygen (O) are 1,312, 1,402, 1,681, and 1,314, respectively. Which element combination is least likely? OH– NO3– NH4+ NaO–
December 1, 2015

Chemistry
Which of the following is a monatomic cation? Br NH4+ SO42– Fr+
December 1, 2015

Chemistry
Which of the following elements is most likely to form an ion that will then form an ionic bond with an ion of a Group 1A element? Pt I Fr Be
December 1, 2015

mechanics
The angled beam ABC in the figure is composed of segments AB and BC joined at B at a 90˚ angle. Both segments have length L and uniform section stiffness EI. The beam is fixed at C and loaded by a downward concentrated force, P, applied at its free end A. You will use ...
November 30, 2015

mechanics
Beam ABC in the figure is composed of segment AB of length L and uniform section stiffness EI joined to segment BC of length L and uniform section stiffness 2EI. The beam is fixed at C (x=2L) and loaded by a downward concentrated force, P, applied at its free end A (x=0). You ...
November 30, 2015

chemistry
When a 10 g sample of copper oxide is reduced by heating in the presence of carbon monoxide, how many moles of copper are formed?
November 28, 2015

English
I have to write a compare and contrast essay on "the pedestrian ,"the murderer" , and "there will come soft rains" - I need help choosing 3 things to compare in each story
November 22, 2015

Chemistry
What properties do metalloids display, and where are metalloids found on the periodic table?
November 19, 2015

Chemistry
Why did Mendeleev leave gaps in his early periodic table, and what was the ultimate importance of the gaps?
November 19, 2015

Physics
The following calculations are for EM radiation, for which the internal energy U=Vu, where u=u(T)is the total energy density. a) Show that (∂S/∂T)_v=V/T(du/dT), and (∂S/∂V)T=(u+P)/T Note: use the answers in part a in part b and c b) Using Stefan-...
November 19, 2015

Physics
The following calculations are for EM radiation, for which the internal energy U=Vu, where u=u(T)is the total energy density. a) Show that (∂S/∂T)_v=V/T(du/dT), and and (∂S/∂V)T=(u+P)/T Note: use the answers in part a in part b and c b) Using Stefan-...
November 19, 2015

Physics
The following calculations are for EM radiation, for which the internal energy U=Vu, where u=u(T)is the total energy density. a) Show that (∂S/∂T)_v=V/T(du/dT), and and (∂S/∂V)T=(u+P)/T Note: use the answers in part a in part b and c b) Using Stefan-...
November 19, 2015

Geometry
The measure of each interior angle in a regular hexagon is?
November 18, 2015

AP Human Geography
1. What role does migration play in the geographic pattern? 2. How about interaction & isolation after migration takes place? 3. When do dialects begin to become so different that they may be viewed as a different language? 4. How has the Internet contributed to the ...
November 18, 2015

Science
Tellurium is a metalloid. How many valence electrons does tellurium have? 3 4 5 6
November 17, 2015

Science
Which of the following shows three elements in order of increasing conductivity? Ge, O, Mn O, Ge, Mn Mn, O, Ge Mn, Ge, O
November 17, 2015

Science
Inner transition metals are composed of which of the following? metals lanthanides and actinides halogens noble gases
November 17, 2015

Science
Which of the following is a characteristic of nonmetals? Nonmetals are often brittle solids. Nonmetals are often malleable. Nonmetals often conduct electricity. Nonmetals are often ductile.
November 17, 2015

Math
20 times 4 because there is 4 sections per acre so 80 in total.
November 17, 2015

Accounting
In the table given below, reconstruct the remaining information using the available data. [ WHERE THE X's ARE] All of the raw material purchased during the period was used in production. (Indicate the effect of each variance by selecting "Favorable" or "...
November 17, 2015

algebra
The revenue achieved by selling x graphing calculators is figured to be The cost of each calculator is How many graphing calculators must be sold to make a profit (revenue - cost) of at least $466.20?
November 16, 2015

algebra
In one U.S. city, the quadratic function models the median, or average, age, y, at which men were first married x years after 1900. In which year was this average age at a minimum? (Round to the nearest year.) What was the average age at first marriage for that year? (Round to...
November 16, 2015

algebra
The owner of a video store has determined that the cost C, in dollars, of operating the store is approximately given by where x is the number of videos rented daily. Find the lowest cost to the nearest dollar.
November 16, 2015

algebra
The sum of 9 times a number and the reciprocal of the number is positive. Find the numbers which satisfy this condition
November 16, 2015

Algebra
An arrow is fired into the air with an initial velocity of 96 feet per second. The height in feet of the arrow t seconds after it was shot into the air is given by the function Find the maximum height of the arrow.
November 16, 2015

Algebra
You drive 129 miles along a scenic highway and then take a 29-mile bike ride. Your driving rate is 4 times your cycling rate. Suppose you have no more than a total of 5 hours for driving and cycling. Let x represent your cycling rate in miles per hour. Write a rational ...
November 16, 2015

math
what is the rate of this ratio in its lowest term - 48 gallons in 14 mins
November 14, 2015

math
Find the inverse of the function f(X)= 2x^2 - 3
November 11, 2015

Chemistry
How to I find the spectator ions of BaCl2+K2SO4->2KCl+BaSO4
November 9, 2015

english
It is always ___ who pays the bill. he her me us would it be he?
November 7, 2015

Math
Thank you this makes sense now!
November 6, 2015

Math
If four times the square of a positive number is added to the product of -29 and the number, the result is 63. Find the number
November 6, 2015

Chemistry
What is the molarity of a solution prepared by placing 7.2 g of glucose in a volumetric flask and adding water to get 250.0 mL of solution?
November 6, 2015

chemistry
IDK what that means??????
November 2, 2015

chemistry
if 40g of KNO3 is dissolved in 100ml water at 25 C WHAT WILL FINAL TEMP BE? SHOW ALL WORK
November 2, 2015

SOC 320
Ha Ha
October 25, 2015

Science
If an ion has 12 protons in its nucleus and 10 electrons outside the nucleus, what is the overall charge on the ion? +2 –2 –1 +1
October 25, 2015

Statistics
the answer will be Q1 (5) Q2 (0.754) Good Luck :)
October 19, 2015

College Algebra
The equationS = 1.3x + 6.4 represents the amount of sales of statin in billions of dollars in 2005. a. According to this equation, people in the U.S spent ---- billion dollars on statins in the year of 2011. b. According to this equation, sales of statin will reach 20.41 ...
October 18, 2015

Health science
Thank you very much I am very sorry for your lost
October 17, 2015

Health science
Make lists of factors that makes your lives stressful and explain how each impacts your physical health and fitness. Please help I'm confused
October 17, 2015

physics
A 330 kg box rests on an adjustable ramp having s = 0.25. The angle on inclination of the ramp is increased until the box begins to slide. At what angle will the box begin to slide?
October 15, 2015

Chemistry
Which of the following procedures involves a physical change in one of the substances? separating an oil from solution by cooling it<--- my answer allowing a nail to rust creating salt by reacting sodium metal and chlorine gas building a model rocket propelled by mixing ...
October 13, 2015

Spanish
Como tu eres? Como es ella/el?
October 9, 2015

Music
Which is an accurate statement? A high pitch will have a high amplitude. A low pitch will have a high frequency.<--- my answer A high pitch will have a high frequency. A low pitch will have a low amplitude.
October 6, 2015

Music
Which term names a musical parameter? tempo notation<----- My answer variation theme
October 6, 2015

Music
What is orchestration? A composer creates various themes in a composition. A composer writes a piece of music. A composer assigns different musical lines to different instruments in a piece of music.<---- My answer A composer weaves different themes into a symphony.
October 6, 2015

Music
Which term is used when a composer shortens a motive by using only part of it or by taking away notes? fragmentation<----- My answer decrescendo theme repetition
October 6, 2015

Geometry
Is a triangle with vertices G(3,2), H(8,5) and K(0,10) a right angle. explain plss, pls. very imp.
October 5, 2015

biology
You are preparing 500 mL of Denaturation Buffer containing 1.5 M NaCl and 0.5 M NaOH. Your stock solutions are 5 M NaCl and 6 M NaOH. How would you prepare the Denaturation Buffer? Include all of the solutions needed to make the buffer. For Nacl, C1V1=C2V2 5*V1=500*1.5 V1=150 ...
October 5, 2015

Algebra 2
Evaluate 4-1.5 using a calculator. Round you’re answer to 3 decimal places
October 4, 2015

math
Do 4 1/2 times 3 1/2, because you have to do the opposite operation to get the missing number.
October 1, 2015

Sequences and Series
use the iterative rule to find the eighth term in the sequence an = 25 − 3n. 176 49<------ My answer 8 1
October 1, 2015

English
A sub-genre that is often concerned more with style and theme than with plot is called: literary fiction<---- My answer magical realism short story psychological fiction
September 30, 2015

History
Which of the following describes a Hindu concept? A shadowy afterlife follows death. The soul is reincarnated after death. God has the same faults as humans. There is one all-powerful god.
September 30, 2015

Math
Which statement is false? A: Every integer is a real number. B: the number zero is a rational number. C: every irrational number is a real number. D: every real number is a rational number****
September 29, 2015

Math
f(x) = log2(x – 3) + 1. How do I find the Domain and Range?
September 29, 2015

health
Digestion, absorption, elimination
September 29, 2015

Math Help
Which binomial is a factor of f(x) = x^4 – 3x^3 – 28x^2 + 36x + 144? (x – 4) (x + 3) (x – 2) (x – 6) I think its the 4th one
September 28, 2015

Math
f(x) = x^3 + 5x^2 + 7x + 3 = (x + 1)(x + 1)(x + 3) What is the multiplicity of the root –1? 2 1 4 3
September 28, 2015

physic
The position function x(t) of a particle moving along an x axis is x = 6.00 - 8.00t2, with x in meters and t in seconds. (a) At what time and (b) where does the particle (momentarily) stop? At what (c) negative time and (d) positive time does the particle pass through the ...
September 26, 2015

Georgia state history
It was actually B but thank you anyway :)
September 24, 2015

Georgia state history
Thank you Ms.Sue :)
September 24, 2015

Georgia state history
which of the following actions does not describe land ownership in royal georgia? A: Women were allowed to own property.****** B: The largest land grants were limited to 500 acres. C: The headright system was used to determine the size of the grant. D: Land could be inherited...
September 24, 2015

Music
Which phrase describes the parts of a basic music staff? 5 lines and 6 spaces high and low music notes 5 spaces and 4 lines 5 lines and 4 spaces
September 20, 2015

ME
Problem 3: Consider water as the substance. (a) Find the specific internal energy (Btu/lbm) when T = 500F and P = 375 psia (b) Find the pressure (psia) when T = 500F and v = 0.02024 ft3/lbm (c) Find the specific volume (ft3/lbm) when T = 500F and h = ...
September 19, 2015

Help?
Which units measure the amplitude of sound waves? seconds decibels watts hertz I think its Watts
September 16, 2015

Music
What would a researcher who studies the tango dance music of Argentina be called? ethnomusicologist historical musicologist musical theorist systematic musicologist I think its C but im not sure
September 15, 2015

Science
A farmer wants to determine if a new fertilizer gives her a better crop yield than her old fertilizer. She spreads the old fertilizer in field A, which has a brand new irrigation system. She spreads the new fertilizer in field B, which has an irrigation system that will be ...
September 15, 2015

Algebra
Thanks. Also (Explain how to solve 8 to the 2nd power + 9(12/3*2)-7.) Is the answer 74? Can you walk me through this?
September 15, 2015

Algebra
What is the solution to 5-t=23? My answer is 18. What is the value of b if -7+b=-8? My answer is -1. What is the solution to 5q=-75? My answer is either -25 or -15. What is the solution to -6z=72? My answer is -12. What is the solution to -7+h=12? My answer is 19. What is the ...
September 15, 2015

CALCULUS
How do I determine whether the function is even, odd, or neither. How do I describe the symmetry? ex 1) f(t)= t&2 +2t -3
September 11, 2015

CALCULUS-SOMEONE HELP!!
ok I'm actually stuck on ex.7
September 11, 2015

CALCULUS
I figured out 3 already and got x=-5/3 1.) -3, 3, 4
September 11, 2015

CALCULUS
I figured out 1. How do I do ex 3 & 7
September 11, 2015

CALCULUS
20.) How do I find the zeros of the function algebraically? ex1) f(x)= x^3 -4x^2 -9x +36 ex3) f(x)= 3 +(5/x) ex7) f(x) = (2x^2-9)/ (3-x)
September 11, 2015

Chem
18) Chlorine reacts with potassium bromide to produce potassium chloride and bromine. A) write a chemical equation, using words, to represent the above chemical reaction. My answer: chlorine + potassium bromide ==> potassium chloride and bromine ( I'm pretty sure this ...
September 7, 2015

Chem
No this is freshman chemistry so that's why I asked such a question. Thanks for breaking it down. Although, what are the answers to them? kinda confused.
September 6, 2015

Chem
A carless chemistry student pours 200 grams of methanol, a flammable substance into the sink. Another careless chemistry student causes the bad situation to get even worse by dropping a lit match into the sink. The metanol burns completely with 300 grams of oxygen from the air...
September 6, 2015

MATH
if nCr+2*nCr=nCr4+1*nCr-1
September 3, 2015

Algebra
a = first derivative of the velocity = dv/dt = -9.8 m/s² (negative since gravity is slowing the rock) Therefore, -9.8 m/s² = dv/dt, which implies that v(t) = -9.8t m/s + c Since the rock is thrown up with an initial velocity of 12 m/s, v(0) = 12 m/s Therefore, 12 m/s...
August 29, 2015

How many milliliters of a stock solution of 6.00 M
How many milliliters of a stock solution of 6.00 M HNO3 would you have to use to prepare 0.190 L of 0.490 M HNO3? I used the equation M1V1=M2V2 6M*V1 = 0.190L*0.490 M lead me to this V1=0.190L*0.490M/6.00 M =0.0931 L per M/6.00M =0.0155166L 0.0155166L/1000mL= 0.155166L
August 28, 2015

chemistry
A block of metal has a width of 3.2 cm, a length of 17.1 cm, and height of 3.6 cm . Its mass is 1.5 kg . Calculate the density of the metal.
August 26, 2015

college math
1. If a person jogs at a rate of mi/hr for hr in a week, how many calories will the person burn?
August 25, 2015

Science
4. Which geographic feature marks the last natural obstacle for Georgia's rivers on their way to the Atlantic Ocean? A) the Floridian Aquifer B) the Vally and Ridge region C) the fall line D) the Marshes of Glynn I got A but I'm not sure if it's right
August 19, 2015

AP world
I can do research for a thesis on whatever AP World topic I want, but I can't find a favorite. Do you guys have any interesting topics you think would be nice to research?
August 18, 2015

Chemistry
If the speed of light is 186,000 miles / sec, how far does light travel in 8.0 minutes?
August 5, 2015

college chemistry
The air in a typical La Crosse basement contains 53 atoms of 222Rn per liter. A. If the basement has 950 ft^2 of floor space and is 8.0 feet tall, how many 222Rn atoms are there in the whole basement? B. Assuming a total pressure of 1.00 atm, what is the partial pressure of ...
August 4, 2015

college chemistry
A 9.60 mL sample of 12.0 M HCl is used to prepare 125 mL of diluted acid. A sample of 32.4 mL of Ba(OH)2 base is exactly neutralized by 24.0 mL of dilute acid. What is the concentration of the Ba(OH)2 base? Help. I don;t know where to start.
July 15, 2015

Physics
In procedure 1: suppose the hanging mass is mH = 203 g and the mass of the cart is mC = 1286 g. a) Assume there is no friction anywhere in the system, and the system starts at rest. i. Find the magnitude of the acceleration of the masses. a = m/s2 ii. Find the magnitude of the...
July 10, 2015

English
What do Transcendentalism and Dark Romanticism have in common? How are they different? I just need help because i'm trying to write an essay.
July 9, 2015

Physics
Suppose the graph of displacement vs. time produced by the ball's motion is: y = 1.56t^2 + 1.04t + 8.11 What is the magnitude of the acceleration of this object?
July 6, 2015

Math
Solve the system of equations using linear combination. a+c=9 8a+4.5c=58
July 1, 2015

Chemistry
Determine what this molecule should really be named. 2,2-ethylpent-3-ene I get the answer 2,2-diethylpent-3-ene. Why would the answer be: 4-ethyl-4-methylhex-2-ene
July 1, 2015

Algebra 1
Roman mixes 12 liters of 8% acid solution with a 20% acid solution, which results in a 16% acid solution. Find the number of liters of 20% acid solution in the new mixture. show your work
July 1, 2015

Chemistry
How would I find the pH of these? I found it for d and e, but I don't know how to do the rest a) 0.25M carbonic acid b) 0.075M CN- c) 0.15M F- d) 0.015M HCl (I got 1.8) e) 0.015 M NaOH (I got 12) f) 0.050 M acetic acid
June 25, 2015

English
Why was Memorial Day originally called Decoration Day? It was a better name for the holiday than Memorial Day. People used to make decorations on that day, but they no longer do. People decorated soldiers' graves with flowers on that day. Decoration is a more old-fashioned...
June 24, 2015

English
To what people does John Winthrop compare the Puritans in "A Model of Christian Charity"? the ancient Egyptians the ancient Romans the ancient Israelites the ancient Babylonians
June 24, 2015

Chemistry
I did and I got 0.015 as my answer: 2.2x10^-4 = 4z^3 3√2.2x10^-4 = 4z^3 0.060368107 = 4z 0.015 = z
June 24, 2015

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